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3 Sheets-Sheet 1. 0. 0. .KRABOL 8v 0. BOSTAD.

' REVOLVING FURNITURE.

"Patented Dec. 25,1894.

' (No Mode -l.) s Sheets-Sheet 2. I 1 0. OpKRABOL 8v G. B0STAD.

REVOLVING FURNITURE.

No. 531,538. Patented Dec, 25, 1894.

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Patented Dec. 25, 1894.

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REVOLVING FURNITURE.

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1 is a plan view of the base with the article re UNITED ST TES PATENT OFFICE.

OLAUS 0. KRABOL AND CHRISTIAN BOSTAD, or CHICAGO, ILLENOIS,'ASSIGN- ORS TO THE AUTOMATIC FOLDING'BED COMPANY, or SAME PLACE.

REVOLVING FURNITURE.

SPECIFICATION forming part of Letters Patent No. 531,538, dated December 25, 1894.

Application filed September 6,1894. Serial No. 522.303. (No model.)-

To all whom it may concern:

Be it known that we, OLAUS O. KRABOL and make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification. Our invention relates to revolving furniture, of that class in which an angular article is carried by a stationary base, and is mounted thereupon in such manner that it may be freely turned upon the base, while the latter stands in close proximity to the wall of an apartment.

The obj ect of the invention is to provide improved means of attachment between the article and the base; improved means for providing a support forward of the base for the article as itturns; and improved means for locking the article against rotation.

The various features of the invention are hereinafter fully described. i

In the accompanying drawings, Figure 1,

moved. Fig.12, is a front elevation of the base and aportion of the article. Fig. 3, is a plan view of the base, the article being indicated by dotted lines as partially turned. Fig. 4, is a longitudinal vertical section of the base and aportion of the superstructure taken on the line44 of Fig. 1. Fig. 5, is a vertical section on the line 5-5 of Fig. 3. Fig. 6,'is a vertical section on the line 6-6 of Fig. 1.

"The base is built up of several parts comprising a longitudinal sill, A; the cross bars a, a, a, mortised into the sill and extending to the rearward side of the base; a frame a 0, ,0 extending across the ends of the base and its rearward side; and the plate, B, superimposed upon the sill and secured to the frame. A

,pair of strips, 0, O, of unequal length but together exactlyequal to the extreme length of the baselie along its front side as a molding or a finish, and at their outer ends are hinged to the front corners of the base as shown at b, b. The shorter of the twostrips or bars 0', has a longitudinal groove along its inner side, within which is carried a slide bar 0, held to its place by a plate, 0, across the groove and limited invits outward movement in the groove by the stop pin, 0 so located inthe bar as to come into contact with the plate, C. The outer end of the bar, 0, is hinged to the'end of the strip or bar, 0, as indicated at C A pull, 7', is secured to the bar, 0, mid: way of the length of the base by means of which the bar may be drawn forwardly, carrying with it the bar, 0', the bar 0, being thereby drawn out in its groove until the pin, 0 strikes the plate, 0, when the further outward movement of the bars is stopped.

A set of upwardly projecting casters, D, are placed upon the cross bars, a, a, a',,their rollers projecting slightly above the upper surface of the plate, B. Similar casters (1, d,

are located at the front of the base, being mounted upon blocks, a, mortised into the front side of the sill, A. Another pair of similar casters, (1, d, is carried, one by each of the bars 0, G, being mounted upon blocks, 6, 6, attached to the inner faces of the said bars;

The superstructure or article of furniture, X, rests upon the casters, D, d, d, and maybe turned thereupon. The article X, is attached to the base by means of a link, F, pivotally secured to the central point of the article by the pin, f, and to one end of the sill, A, by the pin,'f. The article, X, is in further engagement with the base by means of a downwardly projecting pin, G, located near one of its corners, which may be provided with an antifriction roller as shown and which co-operates with a guideway formed by cutting away the plate, B,in the following manner: A slot, H, of sufficient width to accommodate the'pin G, is cut in the plate, B, starting in the corner of the base diagonally opposite the point of attachment of the link, F, tothe sill, A, and extends longitudinally as to the base to its transverse median line. From that point the rearward line of the slot is continued and curved forwardly in thearc of a circle as indicated at h, to the forward corner of the base, the plate B, being entirely cut away forward of this line except asto a small portion extending from the corner of the base along its front side a short distance as indi cated at, J. The portion, J, of the plate adjacent to the forward end of the line, It, is recessed as indicated at, j, so as to form a hook or lug projecting toward the end of the base, the recess, j, being of sufficient capacity to receive the pin, G. Much of the plate, B, forward of the slot, H, may also be cut away as being unnecessary and for the purpose also of accommodating the casters,D, D, and other parts. Apertures are cut in the plate, B, for the accommodation of the easters d, d. The outer or free end of the link, F, lies in the same plane as the plate, 13. It is off-set downwardly near its inner or pivoted end so as not to interfere with the pin, G, the sill, A,being recessed correspondingly.

lVhen the article, X, is in its normal position the pin, G, is either at the extreme end of the slot, H, or within the aperture, j. Before turning the article the bars, G, O, are drawn forward. Pressure is applied to the end of the article remote from the pin, G. The article being in the position indicated in Fig. 1, it turns upon the pin, G, as a center, the pin finding its bearing Within the recess, j. The portion, J, of the plate 13, is adapted to form a stop to limit the forward movement of the link, F. When the link has reached the limit of its forward movement, the pin, G, has become free from the recess,j, and the article now rotates about the pin, f, as a center, the pin, G, following the line, It, and entering the slot, H. Further movement of the article carries the pin, G, along the slot, H, and that in turn causes the pin, f, to recede until it has again reached the position shown in Fig. 1, when the pin, G, will have reached the extreme end of the slot, H, thereby stopping the movement of the article. In turning the article, X, in the opposite direction the action is simply the reverse of that already described. The slot H, serves as a bearing for the pin, G, which gradually moves along it as the article is carried forward, guided by the link, F and the recess, j, serves as a bearing for this pin during the latter portion of the movement of the article.

The pin, G, is caused to enter and leave the recess, 7', by locating it at a less distance from the front of the article, X, than the distance from the pin, f, to the front of the base.

The article is locked against rotation by means of a rock-lever, M, pivoted to the sill, A, at, m, and having its inner end, recessed to engage the end of the link, F, so as to prevent its forward movement. The recess at the inner end of the lever, M, opens laterally so that by swinging the lever upon its pin it is readily disengaged from the link, F.

The forward end of the lever, M, is slotted for the engagement of the pin, 0, carried by a plate, 0, secured to and projecting inwardly from the bar, 0. This slot is diagonal as to the lever so as to serve as a cam whereby the with drawal of the pin,0, swings the lever upon its pivot and disengages it from the link, F, the entrance of the pin, 0, throws the lever in the opposite direction so as to lock the article. A stop pin,P, carried by a plate, 19, secured to the cross bar, a, co-operates with the inner end of the lever, M, and a stop pin, Q, set in the sill, A, co-operates with the outer end of the lever, whereby its movement in either direction is limited. It will be seen that this lock is automatically actuated as the bars, 0, C, are opened and closed.

While the length of the slot H, and depth of the recess j, may be so regulated as to prevent the article X, from swinging backwardly too far, we prefer to place a stop pin, S, in the cross bar, a, to limit the backward movement of the lever F.

We claim as our invention- 1. The combination with the article, X, and a base for carrying such article, of a link bar, F, connecting the article and base as shown, the pin, G, setin the article, and journal bearings for such pin at opposite ends of the base.

2. The combination with the article, X, and with a base for carrying such article, of a link bar pivotally attached to the bottom of the article at its central point and to the base near one of its forward corners, a pin, G, set in the article near one end, and journal bearings for such pin at opposite ends of the base.

3. The combination with the article, X, and with a base for carrying the article, of alink bar pivotally attached to the bottom of the article at its central point, and to the base near one of its forward corners, a pin, G, set in the bottom of the article near one of its forward corners, and journal bearings for the pin in diagonally opposite sections of the base.

4. The combination of an article, X, and with a base, of casters or rollers set in the base for carrying the article, a link bar pivotally attached to the bottom of the article at its central point, and to the base near one of its forward corners, a pin, G, set in the bottom of the article near one of its forward corners, and journal bearings for the pin in diagonally opposite sections of the base.

5. The combination with the article, X, and with a base for carrying the article, of a link bar pivotally attached to the bottom of the article at its central point, and to the base near one of its forward corners, a pin, G, set in the bottom of the article near one of its forward corners, journal bearings for the pin in diagonally opposite sections of the base, and a guideway for the pin connecting such bearmgs.

6. The combination with the article, X, and with a base for carrying the article, of a link bar pivotally attached to the bottom of the article at its central point and to the base near one of its forward corners, a pin, G, set in the bottom of the article near one of its forward corners, the distance from the pin to the adjacent side of the article being less than from the point of the attachment of the link bar to the base to the adjacent side of the base, a recess, j, in the base adjacent to the end of the link bar for the pin, a longitudinal slot, H, in the base diagonally opposite the recess, j, and a guide-way as, h, connecting the recess andthe slot.

7. The combinationwith an article of furniture and with 'a base for carrying the article and upon which it is adapted to turn, of casters or rollers interposed between the base and article, alink bar pivotally secured to the center of the bottom of the article, and to the base near its end, a stop for limiting the forward movement of the link, a pin, G, setin the article near its end, and adapted to pivotally engage the base during the first portion and last portion of a half revolution of the article,

\ and being freed from such engagement during an interval between such first and-final engagement.

8. The combination with an article of furniture and with a platform base, of upwardly projecting casters mounted on the base for carrying the article, the link, F, connecting the article with the base the pin, G, and a guideway in the base for the engagement of the pin, substantially as and for the purpose specified. I

9. The combination with an article of furniture adapted to rotate upon a stationary base and to swing forwardly in turning, and with its base, of bars, 0, C, pivotally attached to the front corners of the base and lying along itsfront side, the adjacent ends of such bars being pivotally united and one of the bars being telescopically extensible, such bars being adapted when swung forwardly, to support the article when in its advanced position. v

10. The combination with an article of furniture adapted to rotate upon a stationary base and to swing forwardly in turning, and with its base, of bars, 0, O, pivotally 'attached to the front corners of the base and lying along its front side, the adjacent ends of such bars being pivotally united and one of the bars being telescopically extensible, such bars being adapted when swung forwardly to support the article when in its advanced position, and casters or rollers carried by the bars for carrying the article.

11. The combination with an article of furniture adapted to rotate upon a stationary base and to swing forwardly in turning, with its base, and with a pivoted extensible section of the base adapted to swing forwardly to support the article in itsadvanced position,

of a horizontally swinging lever, M, pivoted to 12. The combination with an article of f urniture adapted to rotate upon a stationary its base having an extensible section adapted to increase its area and to support the article when in its advanced position, of a horizontally rocking lock lever pivoted to the base and adapted to engage the central pivot of the article for locking the latter in its normal position, a diagonal slot in the forward end of the lever, and a pin' carried by the extensible section and adapted to engage said slot and rock the lever.

In testimony whereof we affix our signatures in presence of two witnesses.

OLAUS o. KRABOL. CHRISTIAN BOSTAD. 

